US 12,191,914 B2
Intra data center optical communication
Or Vidal, Hod Hasharon (IL); Omri Levy, Hod Hasharon (IL); and Nir Chen Sheffi, Hod Hasharon (IL)
Assigned to Solanium Labs Ltd., Hod Hasharon (IL)
Filed by Solanium Labs Ltd., Hod Hasharon (IL)
Filed on Jun. 16, 2022, as Appl. No. 17/807,373.
Application 17/807,373 is a continuation of application No. 17/477,518, filed on Sep. 16, 2021, granted, now 11,398,868.
Claims priority of provisional application 63/195,089, filed on May 31, 2021.
Prior Publication US 2022/0393770 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/61 (2013.01); H04B 10/25 (2013.01); H04B 10/50 (2013.01); H04J 14/02 (2006.01); H04L 5/00 (2006.01)
CPC H04B 10/61 (2013.01) [H04B 10/505 (2013.01); H04L 5/0048 (2013.01); H04B 10/25 (2013.01); H04J 14/02 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A non-transitory computer readable medium for intra data center optical communication, the non-transitory computer readable medium stores instructions for:
receiving an optical input signal by a coherent optical receiver of a second unit of a data center; wherein each input optical signal represents a transmitted optical signal that was transmitted by a coherent transmitter of a first unit of the data center; wherein the transmitted optical signal is generated by modulating a transmitter laser signal that is outputted from a laser of the coherent transmitter;
generating, by a controllable laser of the coherent optical receiver, a reference signal; wherein a frequency of the reference signal is controlled by a processor of the coherent optical receiver, while avoiding from requesting an absolute output frequency of the controllable laser, and independently from a control of the laser of the coherent transmitter;
estimating the frequency of the reference signal by applying a Viterbi-Viterbi fourth power estimator algorithm; and
recovering data embedded in the optical input signal; wherein the recovering of the data comprises optically processing the reference signal and the optical input signal.